Table 1. Number of cases and estimated incidence rates per 100,000 inhabitants of confirmed pertussis cases per age group, France, 2017–2020 (n = 132).

Age groups	2017		2018		2019		2020
	N	Incidence rate per 100,000 inh. (95% CI)	N	Incidence rate per 100,000 inh. (95% CI)	N	Incidence rate per 100,000 inh. (95% CI)	N	Incidence rate per 100,000 inh. (95% CI)
0–11 months	2	84 (0–204)	0	0 (0–0)	0	0 (0–0)	1	23 (0–71)
1–6 years	10	40 (12–68)	3	11 (0–27)	6	32 (4–60)	2	8 (0–19)
7–13 years	7	28 (5–51)	3	17 (0–39)	4	14 (0–29)	2	3 (0–8)
14–25 years	6	16 (2–30)	5	11 (0–22)	7	19 (4–34)	1	2 (0–6)
26–45 years	10	17 (6–28)	10	18 (6–30)	11	15 (6–24)	0	0 (0–0)
46–65 years	8	12 (3–21)	5	4 (0–8)	17	22 (11–33)	3	3 (0–7)
≥ 66 years	3	8 (0–17)	3	3 (0–7)	1	1 (0–3)	2	4 (0–9)
Total	46	17 (12–22)	29	10 (6–14)	46	15 (10–20)	11	3 (1–5)

CI: confidence interval; Inh.: inhabitants; N: number of cases.